52
Alarm
When an error has occurred, Err xx is displayed immediately.
Only after expiry of a user-defined delay time will the alarm be registered and
entered in the logbook.
During an alarm the display blinks, the display backlighting turns
red
.
Error messages can also be signaled by a 22 mA output current (when configured
correspondingly).
The alarm contact is activated by alarm or power failure. 2 sec after the failure event
is corrected, the alarm status will be deleted.
The 22-mA signal can also be triggered by Sensoface messages (configurable).
Generating a message via the CONTROL input
(min. flow / max. flow)
The CONTROL input can be used for parameter set selection or for flow measure-
ment (pulse principle), depending on its assignment in the “Configuration” menu.
First, the flow transmitter must be calibrated in the CONTROL menu: ADJUST FLOW
When preset to flow measurement
an alarm can be generated when the measured flow exceeds a specified range:
(specify value, default: 5 liters/h)
(specify value, default: 25 liters/h)
Power supply (PWR out)
12...24 V AC/DC
Stratos Evo A402
13
12
CONTROL
input
Alarm and HOLD Messages
Содержание Stratos Evo A402
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